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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-313) A stand alone driver for individual tasks
Date Fri, 30 Jun 2006 20:58:32 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-313?page=all ]

Owen O'Malley updated HADOOP-313:
---------------------------------

        Summary: A stand alone driver for individual tasks  (was: running a reduce task standalone)
    Description: 
This is a tool to reproduce problems and to run unit tests involving either a map or reduce
task.
You just give it a reduce directory on the command line.

Usage: java org.apache.hadoop.mapred.StandaloneReduceTask <taskdir> [<limitmaps>]
taskdir name encodes: task_<jobid>_r_<partition>_<attempt>
taskdir contains job.xml and one or more input files named: map_<dddd>.out
You should run with the same -Xmx option as the TaskTracker child JVM



  was:
This is a tool to reproduce problems and to run unit tests involving a reduce task.
You just give it a reduce directory on the command line.

Usage: java org.apache.hadoop.mapred.StandaloneReduceTask <taskdir> [<limitmaps>]
taskdir name encodes: task_<jobid>_r_<partition>_<attempt>
taskdir contains job.xml and one or more input files named: map_<dddd>.out
You should run with the same -Xmx option as the TaskTracker child JVM




> A stand alone driver for individual tasks
> -----------------------------------------
>
>          Key: HADOOP-313
>          URL: http://issues.apache.org/jira/browse/HADOOP-313
>      Project: Hadoop
>         Type: Bug

>     Reporter: Michel Tourn
>     Assignee: Michel Tourn
>  Attachments: sareduce.patch, stand-alone-task.patch
>
> This is a tool to reproduce problems and to run unit tests involving either a map or
reduce task.
> You just give it a reduce directory on the command line.
> Usage: java org.apache.hadoop.mapred.StandaloneReduceTask <taskdir> [<limitmaps>]
> taskdir name encodes: task_<jobid>_r_<partition>_<attempt>
> taskdir contains job.xml and one or more input files named: map_<dddd>.out
> You should run with the same -Xmx option as the TaskTracker child JVM

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